Black Slate Riven is a consistent type of aged stone flooring. It has a natural riven surface and an edge. It is a traditional slate flagstone which is commonly laid with a wide grout line to give the appearance of aged natural stone flooring. It is available in flagstone sizes and is a type of stone flooring which can be used in many different scenarios. This natural stone floor can be used in any room in the home i.e. bathroom or kitchen. It is also frost resistant and can be used externally on a concrete base.